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Old 09-15-2003, 01:23 AM
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goldstone goldstone is offline
W126 Lover
Join Date: Oct 2002
Location: Dutchess County, New York
Posts: 154
Definitely be sure to check-out the useful diagnostic testing procedures GDI includes on their website here:

If you're good enough to be able to get to and remove the amp, and if you've got a basic multimeter, you can carry out the recommended procedures and test the basic functioning of the amp, actuator, speed sensor, and the all-important switch.

While these tests are unlikely to fix anything in and of themselves, they do help to pinpoint the problem(s) and possibly save you bucks (as they did for me last year!)

Good luck...

1991 560SEL-Euro (165,000 miles)
1989 420SEL (Retired from daily use at 325,000 miles; Use as donor vehicle)
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